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, e. JJL'UGT. DEVICE FOR SUPPLYINGC'O'OFLI NG LIQUIDS T0 PISTONS 0F INTERNAL COMBUSTION ENGINES.

APPLICA T-IO N FILED MAY 23} E919. 1,349,516. mum Aug. 10,1920.

5W Gerard Jo/za'nliayt GERARD ao irnnjnuer, or AMS ERDA ,mm mms.

DEVICE non sUrPtYINs COOLING mourns T0 ris'rons 0F INTERNAL-COMBUSTION ENGINES.

Application filed May 23, 1919,, Serial No. 299,368.

b all whom it may concern: Be it known that I, GERARD'JOHAN LUsT,

subject of the Queen of the Netherlands, and residing at Amsterdam, Netherlands, have invented certain new and useful Improvements in Devices for Supplying Cooling Liquids to Pistons of Internal-Combustion Engines, of which the followingis a specification.

The present invention relates to a device for supplying a cooling liquid to the piston of an internal combustion engine consisting of a dipping tube affixed to-the piston and provlded with means for renderlng its resistancefas a liquid conduit greater in one sense of the flow than in the other and a stationary tube arranged underneath the.

piston and acting as a liquid receptacle from which the liquid is transmitted to the piston by the dynamic energy of the same.

The dipping tube of the known devices of this kind plunges at each downward stroke with great velocity into the liquid of the According to the present inventiouthisdrawback is avoided by providing the stationary tube in which the dipping tubev moves up and down with a narrower inner tube which permanently delivers'the cool- 1 ing liquid laterally into the wider tube. At each downward stroke the lower part of the dipping tube thus receivesa certain quantity of cooling liquid leaving the inner stationary tube, this liquid being transmitted to the piston in consequence of the special shape of the dipping tube in consequence of the provision of baflie plates orequiva'lent means rendering its resistance as a liquidconduit in one sense of the flow greater than 1n the other. The superfluous cooling liquid flows away through the outer stationary tube, the

latter acting therefore simply as a receiver for the overflowing liquid without that it is filled with liquid to a certain level as in ordinary cases, any splashing being thus prevented.

represents diagrammatically a device accordingto the invention Fig. '2 the upper end of the inner liquid supply tube. 1

Specification'of Letters latentpj Patented Aug, 10, 1920,

. I the accompanying ,drawing F igure 1 I In F'g. 1 the hollow piston is indicated by -1, the dipping tube by 2, This tube as shown by the drawing. is provided with baflle plates anda mouth piece in form of a nozzle. The liquid supply conduit 7 is arranged within the wider stationary tube. 3 providedwitha liquid outlet conduit 6. At

its upper end the liquid supply tube is closed (Fig. 2) while it is provided near thisend with lateral outlet openings 8.

Having nowdescribed my invention I -de clare that what I claim is:

1. In a piston cooling mechanism, the

combination of a "stationary tube having a I Water inlet, a reciprocating hollow piston, a tube carried by said piston, and having an open end discharging "into said piston, the lower end of thetube having a vertical flange spaced from the tubular walls to form a pocket,the flangealso forming a restricted opening, baflles in said tube between the discharging and restricted ends thereof, and

a water inlet tube looselytelescoping the restricted end of sald reciprocating tube,

and having a closed end provided with water discharging openings, thewater ac-' cumulating in the pocket, and the excess thereof passing through the space between the water inlet tube, and the flange, the waterinthe pocket'being vertically lifted by'mome'ntum to the baffles, and eventually. discharged into'the piston.

2. Ina piston cooling mechanism,flthe combination of a stationary tube having a water inlet, a reciprocating'hollow piston,

a tube carried by said piston, and having an open enddischarging into said piston, the

lower end of the tube having a vertical flange spaced from the tubular walls to form a pocket, the flange also forming a restricted opening, bafiles in saidtube between the discharging and restricted ends thereof, and

a water inlet tubeloosely telescoping the re-' stricted end of said reciprocating tube, and having a closed end, from which depends a conical lug to spread the water passing through the tube, through openings formed in said tube adjacent said conical lug the Water accumulating in the pocket,- theexcess Water passing through the space between the Water inlet tube and the flange, the Water in the pocket being vertically lifted by momentum to the baflies and discharged into the piston.

In testimony whereof I aflix my signature. 10

GERARD J OHAN LUGT. Witnesses:

D. IiLIYN, M, ALVARADO. 

